TWI440384B - Base station and its non-immediate data transmission method - Google Patents

Description

Base station and its non-immediate data transmission method

The invention relates to a base station and a non-immediate data transmission method thereof. More specifically, the base station of the present invention and its non-instantaneous data transmission method utilize a dynamically adjustable fixed length sleep cycle for data transmission.

In the prior art, the lack of power endurance of the mobile device is usually an objective problem that is difficult to overcome. Therefore, in order to save power of the mobile device, the use of the sleep mechanism is generally integrated in the network protocol. Specifically, the sleep mechanism mainly defines a sleep period including a sleep interval and a listening interval by the base station, and simultaneously notifies the mobile device of the sleep cycle, whereby the mobile device can enter the sleep mode in the sleep interval. And exchange data in the listening section, so that the mobile device can achieve the purpose of power saving and data transmission at the same time.

On the other hand, since the data has different transmission patterns, the sleep mechanism must be adjusted accordingly. In detail, the data transmission between the base station and the mobile device is generally divided into real time and non-real time, in which the non-instant data is relative to the immediacy. The data is less urgency to transmit. Therefore, the sleep mechanism for non-immediate data transmission in the prior art mainly adjusts the sleep cycle by exponentially growing sleep intervals.

Please refer to FIG. 1 , which is a schematic diagram of a sleep mechanism for non-instant data transmission in the prior art. Furthermore, in the prior art, the sleep cycle suitable for non-immediate data transmission includes the sleep intervals Y1, Y2, Y3 and the listening interval X. Among them, because non-immediate data is less urgency to transmit, its sleep interval can be extended exponentially, as shown in the figure Si = S 1 * 2 ^{( i -1)} . In this way, although the non-instant data transmission may cause a considerable delay, but the non-immediate data is less urgent, and the time when the mobile device enters the sleep mode can be extended, so that better power saving benefits can be obtained. .

However, as the development of various Internet services is becoming more and more rapid, the transmission efficiency of many non-immediate data is also increasing. In contrast, the delay generated by non-instant data transmission in the sleep interval will be followed. Be asked to lower. Accordingly, if non-immediate data transmission is performed using the sleep mechanism of the prior art, its performance will be severely limited.

In summary, how to achieve a better balance between power saving benefits and low data transmission delays during non-instant data transmission is an urgent need of the industry.

In order to solve the foregoing problems, the present invention provides a base station and a non-instantaneous data transmission method thereof, which are mainly based on the ratio of the sleep interval to the sleep cycle, the efficiency of the data transmission after the listening interval, and the packet transmission delay state. The length of the sleep interval is adjusted, wherein each sleep interval has an equal length.

To accomplish the foregoing objects, the present invention provides a non-instantaneous data transmission method for a base station. The base station is connected to the mobile device via the network, and exchanges data with the mobile device in the data transmission interval. The base station record contains the sleep interval and the sleep period interval of the listening interval. The non-instant data transmission method comprises the following steps: (a) determining, by the base station, a sleep proportional relationship according to a sleep interval, a sleep cycle interval, and a data transmission interval; (b) causing the base station to determine a transmission efficiency relationship according to the listening interval and the data transmission period; (c) causing the base station to determine the packet delay relationship based on the delay time interval in which the data is transmitted to the mobile device; and (d) causing the base station to determine the sleep interval value based on the sleep ratio relationship, the transmission efficiency relationship, and the packet delay relationship.

To accomplish the foregoing objects, the present invention further provides a base station for transmitting non-immediate data. The base station is connected to the mobile device via the network, and exchanges data with the mobile device in the data transmission interval. The memory record of the base station includes a sleep interval and a sleep cycle interval of the listening interval. The processor of the base station is used to determine the sleep proportional relationship according to the sleep interval, the sleep cycle interval, and the data transmission interval. The processor is further configured to determine a transmission efficiency relationship according to the listening interval and the data transmission period. The processor is further configured to determine a packet delay relationship according to a delay time interval in which the data is transmitted to the mobile device. The processor is further configured to determine a sleep interval value according to a sleep ratio relationship, a transmission efficiency relationship, and a packet delay relationship.

Through the above-mentioned technical features, the base station and the non-instant data transmission method of the present invention can directly evaluate the ratio of the sleep interval to the sleep cycle, the efficiency of the data transmission after the listening interval, and the packet transmission delay state. Dynamically adjust the length of the sleep interval to maintain a balance between better power saving benefits and low data transmission delay. Other objects of the present invention, as well as the technical means and implementations of the present invention, will be apparent to those skilled in the art in view of the appended claims.

The contents of the present invention will be explained below by way of examples. However, the embodiments of the present invention are not intended to limit the invention to any environment, application, or manner as described in the embodiments. Therefore, the description of the embodiments is merely illustrative of the invention and is not intended to limit the invention. It should be noted that in the following embodiments and illustrations, elements that are not directly related to the present invention have been omitted and are not shown.

Please refer to both Figure 2A and Figure 2B. 2A is a schematic diagram of a wireless network 2 according to a first embodiment of the present invention. The wireless network 2 includes a base station 21 and a mobile device 23. 2B is a schematic diagram of a base station 21 according to the first embodiment of the present invention. The base station 21 includes a transceiver 211, a memory 213, and a processor 215. Please refer to FIG. 2C, which is a schematic diagram of a sleep mechanism for non-instant data transmission according to the first embodiment of the present invention. The transceiver 211 of the base station 21 is connected to the mobile device 23 via a network 20, and exchanges data with the mobile device 23 in a data transmission interval E[F _N ]. The memory 213 of the base station 21 records a sleep period W and a sleep period interval W+L of a listening interval L. The interaction between network elements will be further elaborated below.

First, because the sleep interval W accounts for the proportion of the overall sleep mode, which is one of the important basis for balancing power saving and data transmission, the processor 215 of the base station 21 is based on the sleep interval W, the sleep cycle interval W+L, and the data. The transmission interval E[F _N ] determines a sleep proportional relationship (not shown). The sleep proportional relationship represents the ratio of the sleep interval W to the overall sleep mode. Moreover, since the ratio of the data transmission period E[F _N ] in the overall non-sleep time is also an important basis for balancing power saving and data transmission, the processor 215 of the base station 21 listens according to the basis. The interval L and the data transmission period E[F _N ] determine a transmission efficiency relationship (not shown). The transmission efficiency relationship represents the proportion of the data transmission period E[F _N ] in the non-sleep time.

Then, the delay time of transmitting data to the mobile device 23 from the base station 21 is also one of the important factors affecting the overall sleep interval. Therefore, the processor 215 of the base station 21 delays according to one of the transmission data to the mobile device 23. The time interval determines a packet delay relationship (not shown). It should be noted that the method for judging the packet delay time interval between the base station 21 and the mobile device 23 can be obtained by means of a conventional packet transmission and reply, or a packet delay estimation method, and will not be described herein.

Finally, since the sleep ratio relationship, the transmission efficiency relationship, and the packet delay relationship are the three most important factors affecting power saving and data transmission balance, the processor 215 of the base station 21 determines the sleep interval according to the three factors. A sleep interval value 210, so that the base station 21 can notify the mobile device 23 of the sleep interval value (ie, the actual length of the sleep interval) through the transceiver 211, and perform subsequent data with the mobile device 23. transmission. Specifically, the base station 21 can dynamically re-determine the sleep interval value through the technique of the present invention, and the base station 21 uses the adjusted sleep interval value for data transmission according to different data transmission conditions.

In addition, it should be specially stated that since the sleep ratio relationship, the transmission efficiency relationship, and the packet delay relationship all have the best solution, the present invention can further utilize the relationship optimal solution as an index for judging the sleep interval value. Moreover, the non-instantaneous data of various agreements may have different needs for the aforementioned factors, and therefore, the importance of different factors may also be adjusted through the combination of weight values.

Specifically, the memory 213 of the base station 21 is further configured to store one of the user input first weight value, a second weight value, and a third weight value (not shown). The first weight value is related to the sleep ratio relationship, and is used to adjust the weight of the sleep proportional relationship, where the second weight value is related to the transmission efficiency relationship, and is used to adjust the weight of the transmission efficiency relationship. The triple weight value is related to the packet delay relationship, and is used to adjust the weight of the packet delay relationship.

Then, the processor 215 of the base station 21 is further configured to determine an optimal sleep ratio relationship of the sleep ratio relationship, an optimal transmission efficiency relationship of the transmission efficiency relationship, and an optimal packet delay relationship of the packet delay relationship. Then, the processor 215 of the base station 21 determines the difference between the sleep ratio relationship and the optimal sleep ratio relationship, the first weight value, the difference between the transmission efficiency relationship and the optimal transmission efficiency relationship, and the second weight value. The difference between the packet delay relationship and the optimal packet delay relationship and the third weight value determine the sleep interval value.

In this way, the value of the sleep interval can be more clearly calculated through the quantized relationship by using the difference between the relationship and the optimal solution as the basis for judging. Moreover, in the use of the weight value in each relationship, the user will be able to respond to different requirements of the sleep proportional relationship, the transmission efficiency relationship, and the packet delay relationship for different non-instant data according to different network transmission environments. The adjustment makes the sleep interval values conform to different network transmission states.

In order to more clearly understand the technical concept of the present invention, the contents of the present invention will be exemplified below. It is to be understood that the following description is only illustrative and is not intended to limit the embodiments of the invention. For example, as in the conventional setting mode, let λ be an average packet unit time arrival rate, and set the average packet service time to 1. Taking the first embodiment as an example, in the sleep period interval W+L, when in the sleep interval W, the packet accumulation amount is λW ; similarly, when in the listening interval L, the packet accumulation amount is λL . In this way, the accumulation amount of the packet in the sleep cycle interval W+L is λ ( W + L ), and therefore, the service time of this part is λ ( W + L ) × 1.

On the other hand, when the base station provides services within the aforementioned service time λ ( W + L ), it also accumulates unprocessed packets. Therefore, the cumulative amount of packets in this part is the overall service time multiplied by the average packet unit. The time arrival rate, ie λE [ F _N ], according to which, the equation E [ F _N ]= λV + λE [ F _N ] can be obtained, and the general formula of the data transmission interval can be obtained. . According to this, the base station can determine the sleep proportional relationship according to the sleep interval W, the sleep cycle interval W+L, and the data transmission interval E[F _N ]. And determine the transmission efficiency relationship according to the listening interval L and the data transmission period E[F _N ] . On the other hand, the average waiting time due to the packet in the sleep cycle interval W+L is And the average waiting time for the packet to be transmitted during data transmission is , plus the average packet service time is 1, so the packet delay relationship is .

Next, the base station can determine the best solution for each relationship and then perform a quantitative comparison. Furthermore, the proportion of sleep is determined by the judgment of the prior art. The optimal solution (ie, the optimal sleep ratio relationship) is 1- λ . In addition, when data is transmitted as soon as it enters the listening interval, it means that there is no wasted time waiting in the listening interval. Therefore, when the data is transmitted into the listening interval, the transmission efficiency will be optimal. The optimal solution (ie, the best transmission efficiency relationship) is 1. Moreover, when the packet is ready to be sent at the end of the data transmission interval, the packet is not wasted waiting in the sleep cycle interval, and there is no waiting in the data transmission interval. Therefore, the packet delay relationship is The optimal solution (ie, the optimal packet delay relationship) is the basic average packet service time, which is the aforementioned set value of 1.

According to this, the base station can be based on the difference between the sleep relationship and the optimal sleep ratio relationship, the first weight value α , the difference between the transmission efficiency relationship and the optimal transmission efficiency relationship, and the second weight value β , the packet delay relationship and the most The difference between the good packet delay relationship and the third weight value γ determines a measurement function:

S ( W , λ , α , β , γ )=1-[ σ _SR (1- λ ) α + σ _EE β + σ _MPD fγ ]

Where σ _SR represents the difference between the sleep proportional relationship and the optimal sleep ratio, σ _EE represents the difference between the transmission efficiency relationship and the optimal transmission efficiency, σ _MPD represents the difference between the packet delay relationship and the optimal packet delay relationship, and f represents a difference Data frame time unit. In this way, when the specific average packet unit time arrival rate λ of a specific network protocol is obtained, if the optimal solution of the sleep interval W is to be obtained, the sleep interval W of the measurement function can be directly differentiated:

And calculate When the solution of the sleep interval W is equal to zero, the sleep interval W obtained at this time is the optimal sleep interval numerical solution. It should be specially stated that when the user considers that the influence factor of the sleep proportional relationship is higher than the other two in a certain network environment, the user can have the weight and the condition of 1 (ie, α + β). + γ = 1), the weight ratio is set to α : β : γ = 3: 1:1, so that the numerical solution of the sleep interval obtained by the above formula will be biased towards the influence of the sleep proportional relationship.

The foregoing example is the optimal solution for the sleep interval W in the case of a specific average packet unit time arrival rate λ , however, if the user wants to be in a multi-network protocol (ie, the average packet unit time arrival rate λ varies greatly) If it is decided that it can simultaneously adapt to the optimal solution of the sleep interval W of the multi-network protocol, the measurement function can be integrated into the interval of 0-1 for the λ value of the measurement function, and another measurement function is obtained:

In this way, if the optimal solution for the sleep interval W that can be adapted to different network protocols is obtained, the sleep interval W of the measurement function S _AVG ( W , α , β , γ ) can also be directly differentiated:

And calculate When the solution of the sleep interval W is equal to zero, the sleep interval W obtained at this time is the optimal sleep interval numerical solution.

The second embodiment is a non-immediate data transmission method of the present invention, and the flowchart thereof is referred to FIG. The method of the second embodiment is applied to a base station (for example, the base station of the foregoing embodiment), and the base station is connected to a mobile device via a network, and exchanges data with the mobile device in a data transmission interval. The base station record includes a sleep interval and a sleep period interval of one of the listening intervals. The detailed steps of the non-immediate data transmission method of the second embodiment are as follows.

First, because the sleep interval accounts for the proportion of the overall sleep mode, which is one of the important basis for balancing power saving and data transmission, step 301 is executed to enable the base station to according to the sleep interval, the sleep cycle interval, and the data transmission interval. Decide on a sleep ratio relationship. Wherein, the sleep proportional relationship represents the ratio of the sleep interval to the overall sleep mode. Moreover, since the proportion of the data transmission period in the overall non-sleep time is also an important basis for balancing power saving and data transmission, step 302 is executed to enable the base station to according to the listening interval and the The data transmission period determines a transmission efficiency relationship. The transmission efficiency relationship represents the proportion of the data transmission period in the non-sleep time.

Then, similarly, the delay time of the data transmitted from the base station to the mobile device is also one of the important factors affecting the overall sleep interval. Therefore, step 303 is executed to enable the base station to transmit the data to the mobile device. A delay time interval determines a packet delay relationship. Finally, since the sleep ratio relationship, the transmission efficiency relationship, and the packet delay relationship are the three most important factors affecting power saving and data transmission balance, step 304 is executed to enable the base station to use the sleep ratio relationship and the transmission efficiency. The relationship and the delay relationship of the packet determine the value of the sleep interval of one of the sleep intervals. In this way, the base station can notify the mobile device of the required sleep interval value (ie, the actual length of the sleep interval), and accordingly transmit the subsequent data with the mobile device.

Similarly, since the sleep ratio relationship, the transmission efficiency relationship, and the packet delay relationship all have the best solution, the non-instant data transmission method of the present invention can further utilize the relationship optimal solution as an index for judging the sleep interval value. Similarly, the non-instantaneous data of various agreements may have different requirements for the aforementioned factors, and therefore, the importance of different factors may also be adjusted through the combination of weight values.

Please refer to FIG. 4, which is a flowchart of a non-immediate data transmission method according to a third embodiment of the present invention. The base station of the third embodiment is similar to the second embodiment except that the base station of the third embodiment further stores one of the user input first weight value, a second weight value, and a third weight value. . The first weight value is related to the sleep proportional relationship, and is used to adjust a weight of the sleep proportional relationship, where the second weight value is related to the transmission efficiency relationship, and is used to adjust a weight of the transmission efficiency relationship, the third weight The value is related to the packet delay relationship to adjust the weight of the packet delay relationship.

Specifically, similar to the content of the second embodiment, in the non-instant data transmission method of the third embodiment, step 401 is performed first, so that the base station determines, according to the sleep interval, the sleep cycle interval, and the data transmission interval. A sleep ratio relationship. Then, step 402 is executed to enable the base station to determine a transmission efficiency relationship according to the listening interval and the data transmission period. Step 403 is executed to enable the base station to determine a packet delay relationship according to a delay time interval in which the data is transmitted to the mobile device.

Then, step 404 is executed to enable the base station to determine an optimal sleep ratio relationship of the sleep proportional relationship. Step 405 is executed to enable the base station to determine an optimal transmission efficiency relationship of the transmission efficiency relationship. Step 406 is executed to enable the base station to determine an optimal packet delay relationship of the packet delay relationship. Finally, step 407 is executed to enable the base station to determine a difference between the sleep ratio relationship and the optimal sleep ratio relationship, a difference between the first weight value, the transmission efficiency relationship, and the optimal transmission efficiency relationship, and the second weight value. The difference between the packet delay relationship and the optimal packet delay relationship and the third weight value determine the sleep interval value.

Similarly, the non-immediate data transmission method of the third embodiment of the present invention will be explained below by practical calculation examples. In detail, in the third embodiment, when the data transmission interval E[F _N ] is When the sleep ratio is The optimal sleep ratio relationship is 1- λ , and the transmission efficiency relationship is The optimal transmission efficiency relationship is 1. And when the packet delay relationship is The optimal packet delay relationship is 1. Where λ represents an average packet unit time arrival rate, W represents the sleep interval, and L represents the listening interval.

Please refer to FIG. 4B, which is another flowchart of the non-immediate data transmission method according to the third embodiment of the present invention. Specifically, in the case of a specific average packet unit time arrival rate λ of a specific network protocol, if the optimal solution of the sleep interval W is to be obtained, step 407 is further divided into steps 407a and 407b. After the step 407a is performed, the base station is caused to have a difference between the sleep ratio relationship and the optimal sleep ratio relationship, a difference between the first weight value, the transmission efficiency relationship, and the optimal transmission efficiency relationship, and the second weight. The value, the difference between the packet delay relationship and the optimal packet delay relationship, and the third weight value determine a measurement function:

S ( W , λ , α , β , γ )=1-[ σ _SR (1- λ ) α + σ _EE β + σ _MPD fγ ]

Where σ _SR represents the difference between the sleep proportional relationship and the optimal sleep ratio, σ _EE represents the difference between the transmission efficiency relationship and the optimal transmission efficiency, and σ _MPD represents the packet delay relationship and the optimal packet delay relationship. The difference, α represents the first weight value, β represents the second weight value, γ represents the third weight value, and f represents a data frame (frame) time unit. Then, after the step 407b is executed, the base station is configured to calculate the optimal solution of the sleep interval for the measurement function, and the sleep interval of the measurement function can be directly differentiated and the optimal solution is obtained, and the sleep interval is used for the measurement. The best solution for the function is the value of the sleep interval.

On the other hand, please refer to FIG. 4C, which is another flowchart of the non-immediate data transmission method according to the third embodiment of the present invention. Specifically, if the user wants to adapt to the optimal solution of the sleep interval of the multi-network protocol simultaneously in the environment of the multi-network protocol (that is, the average packet unit time arrival rate λ varies greatly), similarly, Step 407 is further divided into step 407c and step 407d. After the step 407c is executed, the base station is caused to have a difference between the sleep ratio relationship and the optimal sleep ratio relationship, a difference between the first weight value, the transmission efficiency relationship, and the optimal transmission efficiency relationship, and the second weight. The value, the difference between the packet delay relationship and the optimal packet delay relationship, and the third weight value determine a measurement function:

Similarly, σ _SR represents the difference between the sleep proportional relationship and the optimal sleep ratio, σ _EE represents the difference between the transmission efficiency relationship and the optimal transmission efficiency, and σ _MPD represents the packet delay relationship and the optimal packet delay. The difference between the relations, α represents the first weight value, β represents the second weight value, γ represents the third weight value, and f represents the data frame time unit. Then, after the step 407d is executed, the base station is configured to calculate the optimal solution of the sleep interval for the measurement function, and the sleep interval of the measurement function can be directly differentiated and the optimal solution is obtained, and the sleep interval is used for the measurement. The best solution for the function is the value of the sleep interval.

In summary, the base station of the present invention and its non-instant data transmission method mainly depend on the ratio of the sleep interval to the sleep cycle, the efficiency of the data transmission after the listening interval, and the packet transmission delay state, and are specific to each other. The measurement function dynamically adjusts the length of the sleep interval. As a result, when performing non-instantaneous data transmission with high unpredictability, an appropriate balance between power saving efficiency and low data transmission delay can be achieved.

The above-described embodiments are merely illustrative of the embodiments of the present invention and the technical features of the present invention are not intended to limit the scope of the present invention. It is intended that any changes or equivalents of the invention may be made by those skilled in the art. The scope of the invention should be determined by the scope of the claims.

2. . . Wireless network

20. . . network

twenty one. . . Base station

210. . . Sleep interval value

211. . . transceiver

213. . . Memory

215. . . processor

twenty three. . . Mobile device

X, L. . . Listening interval

Y1~Y3, W. . . Sleep interval

E[F _N ]. . . Data transmission interval

Figure 1 is a schematic diagram of a sleep mechanism of prior art non-instant data transmission;

2A is a schematic diagram of a wireless network according to a first embodiment of the present invention;

2B is a schematic diagram of a base station according to a first embodiment of the present invention;

2C is a schematic diagram of a sleep mechanism for non-instant data transmission according to the first embodiment of the present invention;

3 is a flow chart of a non-immediate data transmission method according to a second embodiment of the present invention;

4A is a flowchart of a non-immediate data transmission method according to a third embodiment of the present invention;

4B is a flowchart of a non-immediate data transmission method according to a third embodiment of the present invention;

Figure 4C is a flow chart of the non-immediate data transmission method of the third embodiment of the present invention.

Claims (8)

A non-immediate data transmission method for a base station, the base station is connected to a mobile device via a network, and the base station records a sleep cycle interval, the sleep cycle interval including a sleep interval and a listening interval. The base station exchanges data with the mobile device in a data transmission interval. The non-instant data transmission method includes the following steps: (a) causing the base station to determine a sleep ratio according to the sleep interval, the sleep cycle interval, and the data transmission interval. (b) causing the base station to determine a transmission efficiency relationship based on the listening interval and the data transmission period; (c) causing the base station to determine a packet delay relationship according to a delay time interval in which the data is transmitted to the mobile device; (d) Having the base station determine a sleep interval value based on the sleep ratio relationship, the transmission efficiency relationship, and the packet delay relationship. The non-instantive data transmission method of claim 1, wherein the base station further stores a first weight value related to the sleep proportional relationship, a second weight value related to the transmission efficiency relationship, and the packet The delay relationship is related to a third weight value, and the non-immediate data transmission method comprises, after step (c), (e) causing the base station to determine an optimal sleep ratio relationship of the sleep proportional relationship; (f) The base station determines one of the best transmission efficiency relationships of the transmission efficiency relationship; (g) causes the base station to determine an optimal packet delay relationship of the packet delay relationship; wherein, step (d) further causes the base station to determine the sleep ratio The difference between the relationship and the optimal sleep ratio relationship and the difference between the first weight value, the transmission efficiency relationship and the optimal transmission efficiency relationship, and the difference between the second weight value, the packet delay relationship, and the optimal packet delay relationship And the third weight value determines the sleep interval value. The non-instantive data transmission method according to claim 2, wherein the data transmission interval is The sleep ratio relationship is The optimal sleep ratio relationship is 1- λ , and the transmission efficiency relationship is The optimal transmission efficiency relationship is 1, and the packet delay relationship is The optimal packet delay relationship is 1, λ represents an average packet unit time arrival rate, W represents the sleep interval, L represents the listening interval, and step (d) further includes: (d1) making the base station according to the sleep ratio The difference between the relationship and the optimal sleep ratio relationship and the difference between the first weight value, the transmission efficiency relationship and the optimal transmission efficiency relationship, and the difference between the second weight value, the packet delay relationship, and the optimal packet delay relationship And the third weight value, determining a measurement function: S ( W , λ , α , β , γ ) = 1 - [ σ _SR (1 - λ ) α + σ _EE β + σ _{M PD} fγ ] wherein σ _SR Representing the difference between the sleep proportional relationship and the optimal sleep ratio, σ _EE represents the difference between the transmission efficiency relationship and the optimal transmission efficiency, and σ _MPD represents the difference between the packet delay relationship and the optimal packet delay relationship, α Representing the first weight value, β represents the second weight value, γ represents the third weight value, f represents a data frame (frame) time unit; (d2) causes the base station to calculate the sleep interval for the measurement function Best solution, where the sleep interval is The best solution for this measurement function is the sleep interval value. The non-instantive data transmission method according to claim 2, wherein the data transmission interval is The sleep ratio relationship is The optimal sleep ratio relationship is 1- λ , and the transmission efficiency relationship is The optimal transmission efficiency relationship is 1, and the packet delay relationship is The optimal packet delay relationship is 1, λ represents an average packet unit time arrival rate, W represents the sleep interval, L represents the listening interval, and step (d) further includes: (d1) making the base station according to the sleep ratio The difference between the relationship and the optimal sleep ratio relationship and the difference between the first weight value, the transmission efficiency relationship and the optimal transmission efficiency relationship, and the difference between the second weight value, the packet delay relationship, and the optimal packet delay relationship And the third weight value, determining a measurement function: S _AVG ( W , α , β , γ ) = ∫ {1 - [ σ _SR (1 - λ ) α + σ _EE β + σ _MPD fγ ]} dλ where σ _SR represents the difference between the sleep proportional relationship and the optimal sleep ratio, σ _EE represents the difference between the transmission efficiency relationship and the optimal transmission efficiency, and σ _MPD represents the difference between the packet delay relationship and the optimal packet delay relationship. , α represents the first weight value, β represents the second weight value, γ represents the third weight value, f represents a data frame (frame) time unit; (d2) causes the base station to calculate the sleep interval for the measurement The best solution of the function, where the sleep Value for the sleep interval between the optimal solution for the measurement function of the system. A base station for transmitting non-instant data, connected to a mobile device via a network, and exchanging data with the mobile device in a data transmission interval, the base station recording a sleep cycle interval, the sleep cycle interval a sleeping section and a listening section, the base station includes: a transceiver for exchanging data with the mobile device in the data transmission interval via the network; a memory for storing the sleep interval and the listening a sleep cycle interval of the interval; and a processor, wherein the processor is configured to determine a sleep ratio relationship according to the sleep interval, the sleep cycle interval, and the data transmission interval, and the processor is further configured to use the listening interval and the The data transmission period determines a transmission efficiency relationship, and the processor is further configured to determine a packet delay relationship according to a delay time interval of transmitting the data to the mobile device, and the processor is further configured to use the sleep proportional relationship, the transmission efficiency relationship, and The packet delay relationship determines a sleep interval value. The base station of claim 5, wherein the memory is further configured to store a first weight value related to the sleep proportional relationship, a second weight value related to the transmission efficiency relationship, and a relationship related to the packet delay relationship. a third weight value, the processor is further configured to determine an optimal sleep ratio relationship of the sleep proportional relationship, an optimal transmission efficiency relationship of the transmission efficiency relationship, and an optimal packet delay relationship determining one of the packet delay relationships, The processor is further configured to: according to the difference between the sleep proportional relationship and the optimal sleep ratio relationship, the first weight value, the difference between the transmission efficiency relationship and the optimal transmission efficiency relationship, and the second weight value, the packet delay The difference between the relationship and the optimal packet delay relationship and the third weight value determine a sleep interval value. The base station according to claim 6, wherein the data transmission interval is The sleep ratio relationship is The optimal sleep ratio relationship is 1- λ , and the transmission efficiency relationship is The optimal transmission efficiency relationship is 1, and the packet delay relationship is The optimal packet delay relationship is 1, λ represents an average packet unit time arrival rate, W represents the sleep interval, L represents the listening interval, and the processor is further configured to use the sleep proportional relationship and the optimal sleep ratio relationship. And a difference between the first weight value, a difference between the transmission efficiency relationship and the optimal transmission efficiency relationship, and a difference between the second weight value, the packet delay relationship and the optimal packet delay relationship, and the third weight value. A measurement function: S ( W , λ , α , β , γ ) = 1 - [ σ _SR (1 - λ ) α + σ _EE β + σ _MPD fγ ] wherein σ _SR represents the sleep proportional relationship and the best The difference in sleep proportional relationship, σ _EE represents the difference between the transmission efficiency relationship and the optimal transmission efficiency, σ _MPD represents the difference between the packet delay relationship and the optimal packet delay relationship, α represents the first weight value, and β represents The second weight value, γ represents the third weight value, the processor is further configured to calculate an optimal solution of the sleep interval for the measurement function, and the optimal solution of the sleep interval for the measurement function is the sleep interval value. . The base station according to claim 6, wherein the data transmission interval is The sleep ratio relationship is The optimal sleep ratio relationship is 1- λ , and the transmission efficiency relationship is The optimal transmission efficiency relationship is 1, and the packet delay relationship is The optimal packet delay relationship is 1, λ represents an average packet unit time arrival rate, W represents the sleep interval, L represents the listening interval, and the processor is further configured to use the sleep proportional relationship and the optimal sleep ratio relationship. And a difference between the first weight value, a difference between the transmission efficiency relationship and the optimal transmission efficiency relationship, and a difference between the second weight value, the packet delay relationship and the optimal packet delay relationship, and the third weight value. A measurement function: S _AVG ( W , α , β , γ ) = ∫ {1 - [ σ _SR (1 - λ ) α + σ _EE β + σ _MPD fγ ]} dλ where σ _SR represents the sleep proportional relationship The difference between the optimal sleep ratio relationships, σ _EE represents the difference between the transmission efficiency relationship and the optimal transmission efficiency, σ _MPD represents the difference between the packet delay relationship and the optimal packet delay relationship, and α represents the first weight value. β represents the second weight value, γ represents the third weight value, and the processor is further configured to calculate an optimal solution of the sleep interval for the measurement function, and the optimal solution of the sleep interval for the measurement function is Sleep interval value.